X^2-3X+2=0

解

X^{2} - 3 X + 2 = 0

X = 2, X = 1

解答ステップ

X^{2} - 3 X + 2 = 0

解くとthe二次式

X_{1, 2} = \frac{- ( - 3 ) \pm ( - 3 ) ^{2} - 4 \cdot 1 \cdot 2}{2 \cdot 1}

(- 3)^{2} - 4 \cdot 1 \cdot 2 = 1

X_{1, 2} = \frac{- ( - 3 ) \pm 1}{2 \cdot 1}

解を分離する

X_{1} = \frac{- ( - 3 ) + 1}{2 \cdot 1}, X_{2} = \frac{- ( - 3 ) - 1}{2 \cdot 1}

X = \frac{- ( - 3 ) + 1}{2 \cdot 1} : 2

X = \frac{- ( - 3 ) - 1}{2 \cdot 1} : 1

二次equationの解:

X = 2, X = 1